Reptilia |
Crocodilia |
Crocodylidae
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
大洋性; 海洋洄游的 (參考文獻 77091); 淡水; 深度上下限 0 - 200 m. Tropical; 41°N - 36°S, 77°E - 171°E (參考文獻 356)
Indo-West Pacific.
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm 110.0 range ? - ? cm Max length : 615 cm TL 雄魚/尚未辨別雌雄; (參考文獻 77094)
Large head and strong snout with a pair of ridges bridging the orbits. Uniform dorsal scales. Very variable coloration. Juveniles with black bands and spots. Body with 4-5 black bands which may disappear in very large individuals. The belly is uniformly colored beige to golden yellow. Some individuals maybe highly pigmented.
May cross open ocean as evidenced by occurrence in remote islands in the Indian Ocean and in the western Pacific Ocean (salinity range 5-20 per mille). Inhabits a wide range of habitats (rivers, creeks, swamps, lagoons and billabongs); needs a source of water less salty than their blood (blood plasma salinity of 11per mille). Ref. 77096 reports a maximum length of 700 cm total length and a maximum weight of 1000 kg for captive individuals. Often basks on open mud banks in cooler months and often in the shade of mangrove areas in warmer months. Has a strong homing ability. Oceanodromous individuals may have barnacles attached to their scales (Ref. 77096). May also have endoparasites, i.e., round worms, tongue worms and flukes (Ref. 77091). Crocodile eggs and flesh are food for humans, while crocodile skin (notably near the belly) are used by the leather industry mostly from farmed crocodiles (Ref. 77091). Known to attack humans, sometimes fatally (Ref. 077096, 077099). Active throughout the year. Hunts by day and night; hunting probably associated to diving behavior. Size determines feeding, i.e., small crocodiles feed frequently on small prey items while larger crocodiles feed infrequently on larger prey. May consume carrion. Gastroliths (stomach stones) help in digesting food items (Ref. 77091).
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
主要參考資料
參考文獻 | 合作者 | 合作者
Greer, A.E. 2006 Encyclopedia of Australian reptiles - Crocodylidae. Australian Museum Online. [http://www.amonline.net.au/herpetology/research/encyclopedia.pdf Version date: 7 August 2006, accessed 16 July 2008]. (參考文獻 77091)
IUCN 瀕危狀態
(參考文獻 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 14 November 2019
CITES狀態 (參考文獻 108899)
對人類具威脅
Traumatogenic (參考文獻 77096)
人類使用
漁業: 商業性; 養殖: 商業性
FAO - 漁業: landings search; Publication: search | FishSource | 周邊海洋
工具
網路資源
基於模型的估計
回復力
(Ref. 69278): |
高度, 族群倍增時間少於 15個月 (K=0.71-2.5) |
釣魚的脆弱性
(參考文獻 71543) |
Moderate to high vulnerability (50 of 100). |
價格種類
(參考文獻 80766): |
Unknown. |
